Manufacturer Defects Per Unit

Select the class type you wish to research

Class A

Gas


Average Minor Defects Per Unit (DPU)	2.7	3	2.9	2.9	7.7
Average Medium Defects Per Unit (DPU)	4.9	4.9	3.5	11.5	10.6
Average Major Defects Per Unit (DPU)	1.6	1.9	1.7	4.6	3.3
Hours to Cure	12	14	11	31	27

Diesel


Average Minor Defects Per Unit (DPU)	3.3	5.3	7.3	5.3	4.6	9.4
Average Medium Defects Per Unit (DPU)	4	6.3	6	7.2	11.6	10.7
Average Major Defects Per Unit (DPU)	3	1.5	3	2.2	4.2	5.7
Hours to Cure	20	19	19	19	30	39

Class B

Gas


Average Minor Defects Per Unit (DPU)	0.4	1.1	1.3	1.4	2	1
Average Medium Defects Per Unit (DPU)	0.4	1.2	2	1.5	2.3	6
Average Major Defects Per Unit (DPU)	0	0.4	0.3	1.2	0.9	0.8
Hours to Cure	0	3	3	7	7	10

Diesel


Average Minor Defects Per Unit (DPU)	0.7	0.6	0.7	1.3	1.3	1.3	1.7
Average Medium Defects Per Unit (DPU)	0.6	1	1.9	2	2.6	3	2.7
Average Major Defects Per Unit (DPU)	0.1	0.4	1.1	0.4	0.9	0.3	0.7
Hours to Cure	1	2	7	3	6	4	6

Class C

Gas


Average Minor Defects Per Unit (DPU)	1.7	2.8	3.3	5.3
Average Medium Defects Per Unit (DPU)	4.6	4.6	5.4	5.1
Average Major Defects Per Unit (DPU)	1.6	0.9	1.9	0.8
Hours to Cure	12	10	14	8

Diesel


Average Minor Defects Per Unit (DPU)	0	1	4.3	3.3	6.9
Average Medium Defects Per Unit (DPU)	2.3	1.8	7.3	7.1	6
Average Major Defects Per Unit (DPU)	0	0.7	1.8	2.6	1.7
Hours to Cure	2	5	14	21	12

Super C

Diesel


Average Minor Defects Per Unit (DPU)	2.9	3.3
Average Medium Defects Per Unit (DPU)	5.9	5.8
Average Major Defects Per Unit (DPU)	1.6	2.1
Hours to Cure	10	13

Choose the fuel type you wish to research

Gas
Diesel

Gas

Choose the class you wish to research

Class A
Class B
Class C

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Diesel

Choose the class you wish to research

Class A
Class B
Class C
Super C

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Class A

Average Minor Defects Per Unit (DPU)	2.7
Average Medium Defects Per Unit (DPU)	4.9
Average Major Defects Per Unit (DPU)	1.6
Hours to Cure	12

Average Minor Defects Per Unit (DPU)	3
Average Medium Defects Per Unit (DPU)	4.9
Average Major Defects Per Unit (DPU)	1.9
Hours to Cure	14

Average Minor Defects Per Unit (DPU)	2.9
Average Medium Defects Per Unit (DPU)	3.5
Average Major Defects Per Unit (DPU)	1.7
Hours to Cure	11

Average Minor Defects Per Unit (DPU)	2.9
Average Medium Defects Per Unit (DPU)	11.5
Average Major Defects Per Unit (DPU)	4.6
Hours to Cure	31

Average Minor Defects Per Unit (DPU)	7.7
Average Medium Defects Per Unit (DPU)	10.6
Average Major Defects Per Unit (DPU)	3.3
Hours to Cure	27

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Class A

Average Minor Defects Per Unit (DPU)	3.3
Average Medium Defects Per Unit (DPU)	4
Average Major Defects Per Unit (DPU)	3
Hours to Cure	20

Average Minor Defects Per Unit (DPU)	5.3
Average Medium Defects Per Unit (DPU)	6.3
Average Major Defects Per Unit (DPU)	1.5
Hours to Cure	19

Average Minor Defects Per Unit (DPU)	7.3
Average Medium Defects Per Unit (DPU)	6
Average Major Defects Per Unit (DPU)	3
Hours to Cure	19

Average Minor Defects Per Unit (DPU)	5.3
Average Medium Defects Per Unit (DPU)	7.2
Average Major Defects Per Unit (DPU)	2.2
Hours to Cure	19

Average Minor Defects Per Unit (DPU)	4.6
Average Medium Defects Per Unit (DPU)	11.6
Average Major Defects Per Unit (DPU)	4.2
Hours to Cure	30

Average Minor Defects Per Unit (DPU)	9.4
Average Medium Defects Per Unit (DPU)	10.7
Average Major Defects Per Unit (DPU)	5.7
Hours to Cure	39

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Class B

Average Minor Defects Per Unit (DPU)	0.4
Average Medium Defects Per Unit (DPU)	0.4
Average Major Defects Per Unit (DPU)	0
Hours to Cure	0

Average Minor Defects Per Unit (DPU)	1.1
Average Medium Defects Per Unit (DPU)	1.2
Average Major Defects Per Unit (DPU)	0.4
Hours to Cure	3

Average Minor Defects Per Unit (DPU)	1.3
Average Medium Defects Per Unit (DPU)	2
Average Major Defects Per Unit (DPU)	0.3
Hours to Cure	3

Average Minor Defects Per Unit (DPU)	1.4
Average Medium Defects Per Unit (DPU)	1.5
Average Major Defects Per Unit (DPU)	1.2
Hours to Cure	7

Average Minor Defects Per Unit (DPU)	2
Average Medium Defects Per Unit (DPU)	2.3
Average Major Defects Per Unit (DPU)	0.9
Hours to Cure	7

Average Minor Defects Per Unit (DPU)	1
Average Medium Defects Per Unit (DPU)	6
Average Major Defects Per Unit (DPU)	0.8
Hours to Cure	10

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Class B

Average Minor Defects Per Unit (DPU)	0.7
Average Medium Defects Per Unit (DPU)	0.6
Average Major Defects Per Unit (DPU)	0.1
Hours to Cure	1

Average Minor Defects Per Unit (DPU)	0.6
Average Medium Defects Per Unit (DPU)	1
Average Major Defects Per Unit (DPU)	0.4
Hours to Cure	2

Average Minor Defects Per Unit (DPU)	0.7
Average Medium Defects Per Unit (DPU)	1.9
Average Major Defects Per Unit (DPU)	1.1
Hours to Cure	7

Average Minor Defects Per Unit (DPU)	1.3
Average Medium Defects Per Unit (DPU)	2
Average Major Defects Per Unit (DPU)	0.4
Hours to Cure	3

Average Minor Defects Per Unit (DPU)	1.3
Average Medium Defects Per Unit (DPU)	2.6
Average Major Defects Per Unit (DPU)	0.9
Hours to Cure	6

Average Minor Defects Per Unit (DPU)	1.3
Average Medium Defects Per Unit (DPU)	3
Average Major Defects Per Unit (DPU)	0.3
Hours to Cure	4

Average Minor Defects Per Unit (DPU)	1.7
Average Medium Defects Per Unit (DPU)	2.7
Average Major Defects Per Unit (DPU)	0.7
Hours to Cure	6

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Class C

Average Minor Defects Per Unit (DPU)	1.7
Average Medium Defects Per Unit (DPU)	4.6
Average Major Defects Per Unit (DPU)	1.6
Hours to Cure	12

Average Minor Defects Per Unit (DPU)	2.8
Average Medium Defects Per Unit (DPU)	4.6
Average Major Defects Per Unit (DPU)	0.9
Hours to Cure	10

Average Minor Defects Per Unit (DPU)	3.3
Average Medium Defects Per Unit (DPU)	5.4
Average Major Defects Per Unit (DPU)	1.9
Hours to Cure	14

Average Minor Defects Per Unit (DPU)	5.3
Average Medium Defects Per Unit (DPU)	5.1
Average Major Defects Per Unit (DPU)	0.8
Hours to Cure	8

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Class C

Average Minor Defects Per Unit (DPU)	0
Average Medium Defects Per Unit (DPU)	2.3
Average Major Defects Per Unit (DPU)	0
Hours to Cure	2

Average Minor Defects Per Unit (DPU)	1
Average Medium Defects Per Unit (DPU)	1.8
Average Major Defects Per Unit (DPU)	0.7
Hours to Cure	5

Average Minor Defects Per Unit (DPU)	4.3
Average Medium Defects Per Unit (DPU)	7.3
Average Major Defects Per Unit (DPU)	1.8
Hours to Cure	14

Average Minor Defects Per Unit (DPU)	3.3
Average Medium Defects Per Unit (DPU)	7.1
Average Major Defects Per Unit (DPU)	2.6
Hours to Cure	21

Average Minor Defects Per Unit (DPU)	6.9
Average Medium Defects Per Unit (DPU)	6
Average Major Defects Per Unit (DPU)	1.7
Hours to Cure	12

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Super C

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Super C

Average Minor Defects Per Unit (DPU)	2.9
Average Medium Defects Per Unit (DPU)	5.9
Average Major Defects Per Unit (DPU)	1.6
Hours to Cure	10

Average Minor Defects Per Unit (DPU)	3.3
Average Medium Defects Per Unit (DPU)	5.8
Average Major Defects Per Unit (DPU)	2.1
Hours to Cure	13

The metrics displayed on this page are specific to NIRVC and are not meant to represent the industry's experiences as a whole.

Manufacturer Quality Metrics

Select the class type you wish to research

Class A

Gas

Diesel

Class B

Gas

Diesel

Class C

Gas

Diesel

Super C

Diesel

Choose the fuel type you wish to research

Gas

Diesel

Frequently Asked Questions

Why are you publishing this data?

We hope to help set proper expectations for our buyers depending on the brand they buy. We believe that defects per unit can be used to compare the quality of the units produced by a certain manufacturer.

Does this mean that I shouldn’t purchase from a manufacturer with a high number of defects or hours to cure?

Is this data reflective of the industry as a whole?

The data is based on data produced with the units that NIRVC receives from the various manufacturers. Other dealers may have different experiences with the same manufacturers depending on manufacturer policies, delivery distance, unit aging, etc.

What units are used in your metrics calculation?

When calculating our metrics we select only new units delivered to customers within the selected timeframe you choose in the selector. Updated timeframes are added with the newest data every quarter and include 12 months’ worth of sold units.

Why don’t you include units based off when they are delivered to the dealer instead of when they were sold to a customer?

We have no way of tabulating all the work required to get a unit ready to sell until the unit is sold.

How many units are included in your averages?

We include the total number of new units that were sold during the specified time range. Due to the potential to really skew the averages, we only include a manufacturer in the data if we have sold more than four units in the selected time frame.

What determines if a defect is minor, medium, or major?

A minor defect is considered any defect that takes a half hour or less for a technician to repair. A medium defect is one that takes between half an hour and two hours to repair. A major defect is any defect that takes 2 hours or more to repair.

What are hours to cure?

Do the defects per unit and hours to cure include repairs after the sale?

This data does not include repairs after the sale. Those repairs will be counted in our upcoming warranty ratings.

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